Oil-electricity hybrid power system for underground coal mine

The invention relates to the technical field of power systems for underground coal mines, in particular to a coal mine underground oil-electric hybrid power system which comprises a front wheel driving assembly, a rear wheel driving assembly and a driving force regulation and control assembly, and the rear wheel driving assembly comprises a duplex gear pump, a hydraulic torque converter, an anti-explosion engine, a front transmission shaft and a rear wet brake drive axle. The duplex gear pump is fixed on the hydraulic torque converter through a bolt, the hydraulic torque converter is fixed on the explosion-proof engine through a bolt, the hydraulic torque converter is connected with the rear wet brake drive axle through a front transmission shaft and a bolt, and the rear wheels are rotatably mounted on the rear wet brake drive axle. In order to meet the safety requirement of the underground working environment of a coal mine while having the hybrid power advantage and adapt to different working conditions acc